Program for Dogs 46-90 lbs, White 6 Pack (1010176)
The Lufenuron in Program for Dogs 46-90 lbs, 6 Month (White) does not kill adult fleas, so if there are already fleas infesting your dog, it may take a few weeks for them to die. However, Program petmeds break the flea lifecycle to keep your pet parasite free by stopping new fleas from reaching maturity.
This flea control product seems safer and it still works very well to control fleas. I plan to keep using it.